Special line sweeping integrated pump truck for oil field
By designing an integrated oilfield-specific pump truck for sweeping lines, which integrates a transition tank and a vertical plunger pump, and employs specific pipelines and control systems, the problems of low operating efficiency and complex connections of traditional pump trucks have been solved, achieving efficient and stable sweeping operations and environmental protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional pump truck operations require multiple vehicles to work together, resulting in low efficiency, high labor costs, high energy consumption, and complex and easily bent connecting pipes, which makes operation inconvenient.
An integrated pump truck for oilfield-specific line sweeping was designed, which integrates a transition tank and a vertical plunger pump on a truck. The inlet and outlet pipes are designed in a "T" shape and equipped with a sealing plate, eccentric limit rod and worm gear mechanism. The line sweeping process is controlled by a control cabinet, and automatic measurement and control are achieved by combining a flow meter and a radar level gauge.
It improves work efficiency, reduces energy consumption, simplifies pipe connections, avoids pipe bending, reduces the complexity of manual operation, and ensures the stability of the sweeping process and environmental protection.
Smart Images
Figure CN224064482U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oilfield sweeping technology, specifically to an integrated oilfield sweeping pump truck. Background Technology
[0002] Sweeping refers to cleaning pipelines with a medium. Oilfield crude oil pipelines are usually swept using media such as water, compressed air, or steam. If the ambient temperature is low, brine may be used to sweep the pipeline to prevent the water from freezing. Pump trucks are the power source for transporting the medium. They are connected to water tankers or water supply networks to apply pressure to the water pumps to sweep the oilfield pipelines. The wastewater generated during sweeping enters a transfer tank, which is mainly used to temporarily store the swept material to avoid direct discharge and environmental pollution. Crude oil is then recovered and wastewater is treated through facilities such as oil-water separation.
[0003] Traditional pump trucks require connecting water tankers, oil tankers, and transfer tanks via pipelines. Each piece of equipment needs to be carried and moved, resulting in low efficiency, long operating time, high labor costs, and significant energy consumption, thus increasing operating costs. Utility Model Content
[0004] Therefore, the purpose of this utility model is to provide an integrated pump truck for oilfield sweeping, in order to solve the technical problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated oilfield-specific sweeping pump truck, comprising a vehicle body, a transition tank connected to one side of the top of the vehicle body, and a valve connected to the lower outer surface of the transition tank. A flow meter is installed at one end of the valve, and a radar level gauge and a pressure relief valve are respectively installed on the top of the transition tank; a vertical plunger pump is installed on the other side of the top of the vehicle body, with an inlet pipe connected to the fluid input end of the vertical plunger pump and an outlet pipe connected to the fluid output end of the vertical plunger pump; a sealing plate is connected to one end of both the inlet and outlet pipes, and a worm gear passes through one side of the sealing plate, a worm wheel passes through the outer surface of the sealing plate, and a second gear is connected to the back of the worm wheel; eccentric limiting rods pass through both sides of the back of the sealing plate, and a first gear is sleeved on the outside of the eccentric limiting rods; a sealing gasket is connected to the back of the sealing plate.
[0006] By adopting the above technical solution, the transition tank and vertical plunger pump are integrated into a single truck, facilitating operation without requiring multiple vehicles and reducing the space occupied during operation. The inlet pipe has two inlets on each side, allowing for independent water supply via a water truck or pipeline network, or simultaneous connection to both. The outlet pipe has dual outlets, ensuring easy connection of oilfield pipelines from any direction on the integrated pump truck, avoiding the need for pipes to bend 180 degrees and bypass the truck from under, top, front, or rear. During pipeline cleaning, workers connect the water truck or pipeline network to the inlet pipe via connecting pipes, and then use other... The connecting pipe connects the outlet pipe to the oil pipeline and the oil pipeline to the valve. After preparation, the staff turns on the vertical plunger pump, flow meter and radar level gauge through the control cabinet. When the vertical plunger pump is working, it can pump the high temperature brine from the water tanker or pipeline into the oil pipeline for sweeping. The mixed wastewater after sweeping enters the transition tank through the valve for temporary storage. During this period, the flow meter and radar level gauge are used to measure the mixed liquid entering the transition tank. When the liquid level in the transition tank is high, sweeping is stopped to avoid overflow. It is then transported to the sewage treatment area for discharge to avoid direct discharge of sewage and pollution of the environment.
[0007] Furthermore, both the inlet and outlet pipes have a "T" shaped cross-section, and the longitudinal section of the inlet pipe is "K" shaped.
[0008] By adopting the above technical solution, there are two inlets on each side of the inlet pipe, which can supply water through water truck or pipeline network alone, or connect to pipeline network and water truck simultaneously. In addition, the outlet pipe is connected on both sides, which makes it easy to connect the oilfield pipeline being swept to the integrated pump truck in any direction, avoiding the phenomenon of connecting pipes bending 180 degrees and going around the bottom, top, front or rear of the vehicle.
[0009] Furthermore, the sealing plate is detachably connected to the inlet pipe and the outlet pipe, respectively.
[0010] By adopting the above technical solution, when disassembling the sealing plate, the operator only needs to reverse the worm gear to remove the sealing plate, making the disassembly and assembly operation simple and convenient.
[0011] Furthermore, the eccentric limiting rod is rotatably connected to the sealing plate, and the eccentric limiting rod abuts against the inlet or outlet pipe.
[0012] By adopting the above technical solution, the eccentric limiting tie rod is an eccentric structure that extends out and abuts against the back of the pipe flange after rotation, thereby preventing the sealing plate from falling off.
[0013] Furthermore, multiple eccentric limiting rods and multiple first gears are provided, and the multiple eccentric limiting rods and multiple first gears are distributed in a ring array.
[0014] By adopting the above technical solution, the number of eccentric limit rods is increased, the holding nodes and area are expanded, stability is improved, and the phenomenon of sealing plate falling off is effectively avoided.
[0015] Furthermore, the diameter of the first gear is smaller than the diameter of the second gear, and the first gear meshes with the second gear, while the worm gear meshes with the worm.
[0016] By adopting the above technical solution, the worm rotates and drives the worm wheel to rotate. The worm wheel and worm mesh together to form a self-locking mechanism to prevent the rotation of the eccentric limit rod from affecting the limit. The rotation of the worm wheel drives the first gear to rotate. After the first gear rotates, it meshes with multiple second gears at the same time, thereby driving multiple eccentric limit rods to rotate.
[0017] Furthermore, the sealing plate, eccentric limiting rod, first gear, second gear, worm gear, worm, and sealing gasket are all provided in six sets.
[0018] By adopting the above technical solution, the four inlet ports and the two outlet ports can be sealed respectively, preventing dust and other impurities from entering the outlet port, inlet port, and vertical plunger pump during the pump truck's movement and operation, and preventing air from being sucked in from unused ports and brine from being sprayed out from unused ports.
[0019] Furthermore, a control cabinet is installed on the outer surface of the vehicle body, and the flow meter, radar level gauge and vertical plunger pump are all electrically connected to the control cabinet.
[0020] By adopting the above technical solution, during the line sweeping process, workers connect the water tanker or pipeline to the inlet pipe via connecting pipes, and connect the outlet pipe to the oil pipeline via other connecting pipes, as well as connect the oil pipeline to the valves. After preparation, workers turn on the vertical plunger pump, flow meter, and radar level gauge through the control cabinet. When the vertical plunger pump is working, it can pump the high-temperature brine from the water tanker or pipeline into the oil pipeline for line sweeping. The mixed wastewater after line sweeping enters the transition tank through the valve for temporary storage. During this period, the flow meter and radar level gauge are used to measure the mixed liquid entering the transition tank. When the liquid level in the transition tank is high, line sweeping is stopped to avoid overflow. The wastewater is then transported to the sewage treatment area for discharge, avoiding direct discharge of wastewater that pollutes and corrodes the environment.
[0021] Furthermore, the inlet pipe, outlet pipe, and top of the sealing plate are all fixed with hanging rings, and the outer surface of the hanging rings is connected with an anti-loss rope.
[0022] By adopting the above technical solution, the sealing plate is connected to the inlet or outlet pipe through a hanging ring and an anti-loss rope. After the sealing plate is removed, the anti-loss rope supports the sealing plate to prevent loss of the sealing plate.
[0023] In summary, the present invention has the following main advantages:
[0024] 1. This utility model integrates a tank, pump, and vehicle into one unit by setting up valves, a transition tank, a flow meter, a radar level gauge, and a pressure relief valve, thereby improving work efficiency and reducing energy consumption; and by simultaneously measuring the sweeping mixture entering the transition tank through the flow meter and the radar level gauge, overflowing is prevented; the integrated vehicle eliminates the need for separate pump trucks and transition tanks, further improving work efficiency.
[0025] 2. This utility model, through the setting of inlet and outlet pipes, has two inlets on each side of the inlet pipe, which can supply water through water truck or pipeline network alone, or connect to pipeline network and water truck simultaneously. In addition, with the outlet pipe connecting on both sides, the oilfield pipeline being swept can be easily connected to the integrated pump truck from any direction, avoiding the phenomenon of connecting pipes bending 180 degrees and going around the bottom, top, front or rear of the vehicle; it facilitates the connection of pipelines.
[0026] 3. This utility model, through the arrangement of a sealing plate, an eccentric limiting rod, a first gear, a second gear, a worm gear, a worm, and a sealing gasket, allows for easy switching when a certain interface of the inlet or outlet pipe is not in use. Simply install the sealing plate on the inlet or outlet pipe and then rotate the worm gear. The sealing gasket fills any gaps to prevent leakage. The rotation of the worm gear drives the worm wheel to rotate, and the meshing of the worm wheel and worm gear creates a self-locking mechanism to prevent the rotation of the eccentric limiting rod from affecting the limiting position. The rotation of the worm wheel drives the first gear to rotate, and the first gear simultaneously meshes with multiple second gears, thereby driving multiple eccentric limiting rods to rotate. Due to the eccentric limiting... The tie rod has an eccentric structure, which extends and abuts against the back of the pipe flange after rotation, thus preventing the sealing plate from falling off. The large number of eccentric limiting tie rods increases the holding nodes and area, improving stability. For subsequent disassembly, the sealing plate can be removed simply by reversing the worm gear, making the disassembly and assembly operation simple and convenient. Compared with the installation of traditional flange plugs, the operation is simpler and more convenient. Compared with the installation of traditional valves, the position of the sealing plate is easy to see, allowing staff to directly see whether the inlet or outlet pipe interface is closed, without the need for staff to walk to the valve to check the valve core or valve stem position, which facilitates inspection. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the structure of this utility model;
[0028] Figure 2 This is a schematic diagram of the inlet tube structure of this utility model;
[0029] Figure 3 This is a side sectional view of the sealing plate structure of this utility model;
[0030] Figure 4 This is a schematic diagram of the back structure of the sealing plate of this utility model.
[0031] In the diagram: 1. Vehicle body; 2. Transition tank; 3. Valve; 4. Flow meter; 5. Radar level gauge; 6. Pressure relief valve; 7. Control cabinet; 8. Vertical plunger pump; 9. Inlet pipe; 10. Outlet pipe; 11. Sealing plate; 12. Hanging ring; 13. Anti-loss rope; 14. Eccentric limit rod; 15. First gear; 16. Second gear; 17. Worm gear; 18. Worm; 19. Sealing gasket. Detailed Implementation
[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0033] The embodiments of this utility model will be described below based on its overall structure.
[0034] Example 1:
[0035] Oilfield-specific integrated pump truck for sweeping lines, such as Figures 1-4 As shown, the system includes a vehicle body 1, with a transition tank 2 connected to one side of the top of the vehicle body 1. The transition tank 2 is made of high-quality and high-thickness 316L stainless steel or 2205 duplex stainless steel. The interior of the transition tank 2 is equipped with an electroplated anti-corrosion layer, and the interior of the electroplated anti-corrosion layer is coated with anti-corrosion paint. The exterior of the transition tank 2 is wrapped with an insulation layer. A valve 3 is connected to the lower surface of the outer surface of the transition tank 2, and a flow meter 4 is installed at one end of the valve 3. A radar level gauge 5 and a pressure relief valve 6 are installed on the top of the transition tank 2. The transition tank 2 and the vertical plunger pump 8 are integrated into one truck, which is convenient to operate without the need for multiple vehicles and reduces the area occupied during operation. The transition tank 2 is made of high-quality and high-thickness 316L stainless steel or 2205 duplex stainless steel. The interior of the transition tank 2 is electroplated and coated with anti-corrosion paint. The exterior of the transition tank 2 is wrapped with an insulation layer. The three layers of anti-corrosion effectively reduce the corrosion of the transition tank 2 by brine, and the low thermal conductivity slows down the phenomenon of the internal medium temperature dropping, thereby reducing the occurrence of blockage and other failures.
[0036] A vertical plunger pump 8 is installed on the other side of the top of the vehicle body 1. The fluid input end of the vertical plunger pump 8 is connected to an inlet pipe 9. The longitudinal section of the inlet pipe 9 is "K" shaped. The fluid output end of the vertical plunger pump 8 is connected to an outlet pipe 10. The cross-sections of both the inlet pipe 9 and the outlet pipe 10 are "T" shaped. There are two inlets on each side of the inlet pipe 9, which can be supplied with water by water truck or pipeline network alone, or can be connected to pipeline network and water truck simultaneously. In conjunction with the outlet pipe 10, the oilfield pipeline being swept can be easily connected to the integrated pump truck in any direction, avoiding the phenomenon of connecting pipes bending 180 degrees and going around from the bottom, top, front or rear of the vehicle.
[0037] Both the inlet pipe 9 and the outlet pipe 10 are connected to a sealing plate 11 at one end. The sealing plate 11 is detachably connected to the inlet pipe 9 and the outlet pipe 10, respectively. A worm gear 18 passes through one side of the sealing plate 11, and a worm wheel 17 passes through the outer surface of the sealing plate 11. A second gear 16 is connected to the back of the worm wheel 17. Eccentric limiting rods 14 pass through both sides of the back of the sealing plate 11. A first gear 15 is sleeved on the outside of the eccentric limiting rod 14. The diameter of the first gear 15 is smaller than the diameter of the second gear 16. The first gear 15 and... The second gear 16 meshes with the worm gear 17 and the worm 18. The eccentric limiting rod 14 is rotatably connected to the sealing plate 11 and abuts against the inlet pipe 9 or the outlet pipe 10. Multiple eccentric limiting rods 14 and multiple first gears 15 are provided, and they are arranged in a circular array. A sealing gasket 19 is connected to the back of the sealing plate 11. The sealing plate 11, eccentric limiting rod 14, first gear 15, and second gear 16 are all connected in a circular array. The worm gear 17, worm 18, and sealing gasket 19 are each provided in six sets. When a certain interface of the inlet pipe 9 and outlet pipe 10 is not needed, the operator only needs to install the sealing plate 11 on the inlet or outlet pipe 10 and then rotate the worm 18. The sealing gasket 19 fills the gap to prevent leakage. After the worm 18 rotates, it drives the worm gear 17 to rotate. The meshing of the worm gear 17 and worm 18 forms a self-locking mechanism to prevent the rotation of the eccentric limit rod 14 from affecting the limit. The rotation of the worm gear 17 drives the first gear 15 to rotate. After the first gear 15 rotates, it meshes with multiple second gears 16, thereby driving multiple eccentric limit rods 14 to rotate. Since the eccentric limit rod 14 is an eccentric structure, it extends and abuts against the back of the pipe flange after rotation, thereby preventing the sealing plate 11 from falling off. The large number of eccentric limit rods 14 increases the holding node and area, improving stability. When disassembling the sealing plate 11, the operator only needs to reverse the worm 18 to remove the sealing plate 11. The disassembly and assembly operation is simple and convenient.
[0038] See Figure 1 In the above embodiment, a control cabinet 7 is installed on the outer surface of the vehicle body 1. The flow meter 4, radar level gauge 5, and vertical plunger pump 8 are all electrically connected to the control cabinet 7. During line sweeping, the operator connects the water tanker or pipeline to the inlet pipe 9 through connecting pipes, and connects the outlet pipe 10 to the oil pipeline through other connecting pipes, and connects the oil pipeline to the valve 3. After preparation, the operator turns on the vertical plunger pump 8, flow meter 4, and radar level gauge 5 through the control cabinet. When the vertical plunger pump 8 is working, it can pump the high-temperature brine in the water tanker or pipeline into the oil pipeline for line sweeping. The mixed sewage after line sweeping enters the transition tank 2 through the valve 3 for temporary storage. During this period, the flow meter 4 and radar level gauge 5 simultaneously measure the mixed liquid entering the transition tank 2. When the liquid level in the transition tank 2 is high, line sweeping is stopped to avoid overflow. The sewage is then transported to the sewage treatment area for discharge to avoid direct discharge of sewage and pollution of the corrosive environment.
[0039] Example 2:
[0040] Based on the above embodiment 1, in order to avoid the loss of the sealing plate 11 after disassembly, the following settings are now implemented.
[0041] See Figures 2-4 In the above embodiment, the top of the inlet pipe 9, the outlet pipe 10 and the sealing plate 11 are all fixed with a hanging ring 12. The outer surface of the hanging ring 12 is connected with an anti-loss rope 13. The sealing plate 11 is connected to the inlet pipe 9 or the outlet pipe 10 through the hanging ring 12 and the anti-loss rope 13. After the sealing plate 11 is removed, the anti-loss rope 13 supports the sealing plate 11 to prevent the sealing plate 11 from being lost and causing loss.
[0042] The implementation principle of this utility model is as follows: First, the transition tank 2 and the vertical plunger pump 8 are integrated on a truck, which is convenient to operate without the need for multiple vehicles and reduces the area occupied during operation. The transition tank 2 is made of high-quality and high-thickness 316L stainless steel or 2205 duplex stainless steel. The interior of the transition tank 2 is electroplated and coated with anti-corrosion paint. The exterior of the transition tank 2 is wrapped with a heat insulation layer. The three-layer anti-corrosion effectively reduces the corrosion of the transition tank 2 by brine, and the low thermal conductivity slows down the phenomenon of internal medium temperature drop, thereby reducing the occurrence of blockage and other failures. The inlet pipe 9 has two inlets on each side, which can supply water through water truck or pipeline network alone, or can be connected to pipeline network and water truck simultaneously. It is also connected to the outlet pipe 10 on both sides, so that the oilfield pipeline being swept can be connected to the integrated pump truck from any direction, avoiding the phenomenon of connecting pipes bending 180 degrees and going around the bottom, top, front or rear of the vehicle.
[0043] During the sweeping process, workers connect the water tanker or pipeline to the inlet pipe 9 via connecting pipes, and connect the outlet pipe 10 to the oil pipeline via other connecting pipes, as well as connect the oil pipeline to valve 3. After preparation, workers turn on the vertical plunger pump 8, flow meter 4, and radar level gauge 5 through the control cabinet. When the vertical plunger pump 8 is working, it can pump the high-temperature brine from the water tanker or pipeline into the oil pipeline for sweeping. The mixed wastewater after sweeping enters the transition tank 2 through valve 3 for temporary storage. During this period, the flow meter 4 and radar level gauge 5 simultaneously measure the mixed liquid entering the transition tank 2. When the liquid level in the transition tank 2 is high, sweeping is stopped to avoid overflow. The wastewater is then transported to the sewage treatment area for discharge to avoid direct discharge of wastewater that pollutes and corrodes the environment.
[0044] When one of the inlet pipe 9 or outlet pipe 10 is not in use, the operator only needs to install the sealing plate 11 on the inlet pipe 9 or outlet pipe 10 and then rotate the worm gear 18. The sealing gasket 19 fills the gap to prevent leakage. After the worm gear 18 rotates, it drives the worm wheel 17 to rotate. The meshing of the worm wheel 17 and worm gear 18 forms a self-locking mechanism to prevent the rotation of the eccentric limit rod 14 from affecting the limit. The rotation of the worm wheel 17 drives the first gear 15 to rotate. After the first gear 15 rotates, it meshes with multiple second gears 16, thereby driving multiple eccentric limit rods 14 to rotate. Since the eccentric limit rods 14 are eccentric structures, they extend and abut against the back of the pipe flange after rotation, thus preventing the sealing plate 11 from falling off. The large number of eccentric limit rods 14 increases the holding nodes and area, improving stability. When disassembling the sealing plate 11, the operator only needs to reverse the worm gear 18 to remove the sealing plate 11. The disassembly and assembly operation is simple and convenient.
[0045] It should be noted that components that come into direct contact with brine, such as valve 3, flow meter 4, vertical plunger pump 8, and sealing gasket 19, should be made of high-temperature and corrosion-resistant materials, such as 316L stainless steel, 2205 duplex stainless steel, ceramic fiber, modified graphite, or filled PTFE. Alternatively, an anti-corrosion coating can be applied to the contact surfaces.
[0046] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.
Claims
1. A wire sweeping and integrated pumping truck for oil field, comprising a truck body (1), characterized in that: The top side of the car body (1) is connected with a transition tank (2), and the lower part of the outer surface of the transition tank (2) is connected with a valve (3), one end of the valve (3) is provided with a flowmeter (4), and the top of the transition tank (2) is respectively provided with a radar liquid level meter (5) and a pressure relief valve (6); The top of the car body (1) is provided with a vertical plunger pump (8), the fluid input end of the vertical plunger pump (8) is connected with an inlet pipe (9), and the fluid output end of the vertical plunger pump (8) is connected with an outlet pipe (10); One end of the inlet pipe (9) and the outlet pipe (10) is connected with a sealing plate (11), and the sealing plate (11) is penetrated by a worm (18) on one side, the outer surface of the sealing plate (11) is penetrated by a worm wheel (17), and the back of the worm wheel (17) is connected with a second gear (16), the back of the sealing plate (11) is penetrated by an eccentric limiting pull rod (14) on both sides, and the first gear (15) is sleeved outside the eccentric limiting pull rod (14), and the back of the sealing plate (11) is connected with a sealing gasket (19).
2. The integrated pigging and pumping unit for oilfield use according to claim 1, characterized in that: The cross section of the inlet pipe (9) and the outlet pipe (10) is "T" shaped, and the longitudinal section of the inlet pipe (9) is "K" shaped.
3. The integrated pigging and pumping unit for oilfield use according to claim 2, characterized in that: The sealing plate (11) is detachably connected with the inlet pipe (9) and the outlet pipe (10).
4. The integrated pigging and pumping unit for oilfield use according to claim 1, characterized in that: The eccentric limiting pull rod (14) is rotatably connected with the sealing plate (11), and the eccentric limiting pull rod (14) abuts against the inlet pipe (9) or the outlet pipe (10).
5. The integrated pigging and pumping unit for oilfield use according to claim 4, characterized in that: The eccentric limiting pull rod (14) and the first gear (15) are provided with a plurality of, and a plurality of eccentric limiting pull rods (14) and a plurality of first gears (15) are arranged in annular array.
6. The integrated pigging and pumping unit for oilfield use according to claim 5, characterized in that: The diameter of the first gear (15) is smaller than the diameter of the second gear (16), and the first gear (15) is engaged with the second gear (16), and the worm wheel (17) is engaged with the worm (18).
7. The integrated pigging and pumping unit of claim 1, wherein: The sealing plate (11), the eccentric limiting pull rod (14), the first gear (15), the second gear (16), the worm wheel (17), the worm (18) and the sealing gasket (19) are provided with six groups.
8. The integrated pigging and pumping unit of claim 1, wherein: The outer surface of the car body (1) is provided with a control cabinet (7), and the flowmeter (4), the radar liquid level meter (5) and the vertical plunger pump (8) are electrically connected with the control cabinet (7).
9. The integrated pigging and pumping unit of claim 1, wherein: The top of the inlet pipe (9), the outlet pipe (10) and the sealing plate (11) is fixedly provided with a hanging ring (12), and the outer surface of the hanging ring (12) is connected with an anti-lost rope (13).